No abstract

The measurements conducted around nasopalatine canal provided useful information prior to implant placement in the anterior maxilla.

PurposeThis study was performed to compare the accuracy of micro-computed tomography (CT) and cone-beam computed tomography (CBCT) in detecting accessory canals in primary molars.Materials and MethodsForty-one extracted human primary first and second molars were embedded in wax blocks and scanned using micro-CT and CBCT. After the images were taken, the samples were processed using a clearing technique and examined under a stereomicroscope in order to establish the gold standard for this study. The specimens were classified into three groups: maxillary molars, mandibular molars with three canals, and mandibular molars with four canals. Differences between the gold standard and the observations made using the imaging methods were calculated using Spearman's rho correlation coefficient test.ResultsThe presence of accessory canals in micro-CT images of maxillary and mandibular root canals showed a statistically significant correlation with the stereomicroscopic images used as a gold standard. No statistically significant correlation was found between the CBCT findings and the stereomicroscopic images.ConclusionAlthough micro-CT is not suitable for clinical use, it provides more detailed information about minor anatomical structures. However, CBCT is convenient for clinical use but may not be capable of adequately analyzing the internal anatomy of primary teeth.

Mandibular lingual concavity dimensions were found to vary by age, location, and the presence/absence of teeth. Third party software can be used to generate 3-dimensional models that provide useful information about shape, size, and location of sublingual and submandibular concavities prior to implant placement.

Halitosis is described as offensive breath caused by various factors such as periodontal diseases, bacterial coating of tongue, systemic disorders and different types of foods. Pseudohalitosis is a situation that patients complain of oral malodor even though they do not have offensive odour. The purpose of this study was to compare the relationships between social anxiety estimations and both pseudohalitosis and genuine halitosis cases. Liebowitz Social Anxiety Scale (LSAS) and questionnaire regarding halitosis were applied to 100 participants. Halitosis was determined using organoleptic method, gas chromatography and portable sulphur monitor. anova test and 2-tailed Spearman's rank-order correlation coefficient were used to determine the differences and relations between groups. With reference to LSAS, 62% of participants had anxiety. Among these patients, 98% had genuine halitosis (P < 0·05). The mean measurements of VSC values were 248·65 ppm in halimeter, 298·02 ppm of H2 S, 95·33 ppm of CH3 SH and 47·00 ppm of (CH3 )2 S in gas chromatography. Halitosis was present in 90% of participants, and it was absent in 10% by organoleptic assessment. There was a significant correlation between organoleptic and halimeter measurements. Moreover, statistically significant relationship was detected between anxiety and halitosis. Genuine halitosis patients exhibit social anxiety, so it can be said that there is a causal relationship between halitosis and anxiety. Comparison of the results of objective measurements (sulphur monitor, gas chromatography, organoleptic method) was statistically significant; therefore, it can be said that these methods can be used in diagnosis of halitosis with high accuracy.

The results suggest that tongue scraping can be taken into consideration in order to manage gingival inflammation as well as VSC levels in gingivitis patients but further clinical studies are required to judge the clinical relevance.

No abstract

No abstract